Railway Side Sliding Door Arc-Linear Track
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current side sliding doors in railway vehicles are prone to freezing in extreme cold conditions due to snow accumulation at the doorway, which can lead to operational issues.
Innovation Solution
A side sliding door design with an arc-plus-linear reciprocating motion movement track and a flush outer surface with the vehicle body, combined with a stepped structure and double guide rail system, to prevent snow accumulation and ensure smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door body is designed with a built-in structure (flush with vehicle body), then snow accumulation is prevented and freezing risk is reduced, but the movement stroke requirement increases
Solution Approach 1:
The guide rail is designed with an arc-plus-linear shape instead of a purely linear track. The arc section allows the door body to follow a curved path that accommodates the larger movement stroke required for the flush-mounted design, while the linear section completes the closing motion. This curved trajectory solution enables the door to achieve the necessary compression stroke without requiring excessive linear travel distance.
Solution Approach 2:
The door movement is transformed from simple linear sliding to arc-plus-linear reciprocating motion. By introducing the arc dimension, the door body can achieve greater effective compression stroke through a combination of curved and linear paths, solving the stroke requirement issue while maintaining the flush-mounted configuration.
2Object-affected harmful factors
If the outer surface of the door body is made flush with the vehicle body, then snow accumulation at the doorway is avoided, but the door structure complexity increases
Solution Approach 1:
The arc-plus-linear guide rail design enables the flush-mounted door configuration by providing the necessary movement trajectory. This curved path design is integrated into the existing door structure, avoiding the need for complex external snow guards or protruding elements while achieving the snow prevention goal through the flush surface design.
Solution Approach 2:
The guide rail assembly serves multiple functions: it provides the arc-plus-linear motion path required for the flush-mounted door, ensures proper sealing through the compressed position, and maintains structural integrity. This multi-functional design avoids adding separate components for snow prevention, reducing overall structural complexity.
3Length of moving object
If an arc-plus-linear reciprocating motion track is adopted, then the required compression stroke is achieved, but the guiding mechanism complexity increases
Solution Approach 1:
The arc-plus-linear guide rail design merges the motion control function with the existing door guiding structure. Rather than adding a separate mechanism to achieve the arc motion, the guide rail itself is shaped to provide both the curved and linear segments, integrating multiple functions into a single component that reduces overall complexity.
Solution Approach 2:
The arc section of the guide rail provides the necessary curved motion path to achieve the compression stroke requirement. This geometric solution is implemented directly in the guide rail shape rather than through complex linkages or mechanisms, maintaining simplicity while achieving the required motion characteristics.
Data Source
AI summary
A side sliding door of a railway vehicle comprises a door body (100), and a driving device for the opening and closing of a doorway. An outer surface of the door body (100) is flush with an outer surface of the vehicle body when the door body (100) is closed. A movement track of the door body is arranged as an arc-plus-linear reciprocating motion. The outer surface of the door body is flush with the outer surface of the vehicle body when the door body is closed, so that there exists no height difference between the vehicle body and a doorway of the side sliding door. Snow accumulation at doorway under an extreme cold working condition is avoided, and then the risk of a door body being frozen is reduced.